invaluable

a.无价的

intruder, intrusion, intrusive, intuit, intuition, intuitional, intuitive, intuitively, intumescence, Inuit, inundate, inundation, inure, inured, invade, invader, invalid, invalidate, invalidism, invalidity, invariability, invariable, invariably, invariance, invasion, invasive, invective, inveigh, inveigle, invent, invention, inventive, inventor, inventory, inverse, inversely, inversion, invert, invertebrate, inverted,